I recently bought a 1992 prelude si 4ws and have noticed a few problems but don't know what is gonna need to be fixed to solve these problems. I'm just wondering what these problems are signs of and what will be needed to fix them. First, when i start the engine, car often smokes white smoke. Not tons of smoke, but like a cloud, then it tends to stop. The transmision sometimes grinds when shifting into 3rd. It has an aftermarket catback exhaust but with stock headers. sometimes when rpm's get above 3 thousand, the exhaust sounds like it rattles or might have a leak in it. Are there any common places to look for problems with the exhaust besides at welds? Do you think if i got headers and took it to a shop to have installed that they would easily be able to fix it? Some times when driving on not so smooth pavment, and i go over a dip in the road or something like that, it feels like the back wheels turned. It almost feels as if i was fish tailing a front wheel drive car. It doesn't do it that often, and when it does do it, it's not a big pull to the side, just real quick and it shakes the car. Doesn't seem to do it enough that it'd be a safety hazard. I'm kinda thinking that it's a problem with the 4 wheel steering. it feels like the back wheels turn when going over the dip or bump. what could be the problem with that or any of the other problems listed. How much money should i be expecting to spend?